Salazar, The Awakened

Hexproof, vigilance, first strike, lifelink
At the beggining of your upkeep you get an
experience counter.
Remove an experience counter: Deal 4 damage to
any target, if it's a creature or planeswalker and it
dies this turn, your may exile it instead.
If you have 10 or more experience counters this
creature has protection from permanents.